bug#18993: Emacs trunk often freezes on NS

[Angelo Graziosi]

After the changes of rev. 118192 (for which I already did a bug report 
[*]) and their fixes, Emacs trunk often freezes on NS. It seems that 
this occurs mainly when I double click a text to be copy/paste 
(elsewhere, usually) with CMD-c/CMD-v

I notice also another thing.. When I run M-x SOMETHING the text at about 
the center of the frame (say a rectangle whose height is about that of 
the frame and the width is about 10 characters) is blanked (this for 
about the time in which M-x SOMETHING is executed).

I haven't an exact recipe to reproduce the above issue, but I see them 
since trunk > Oct 22-23.

The attached tar-ball contains both the Emacs forced quit report sent to 
Apple and the output of M-x report-emacs-bug.


Ciao,
 Angelo.


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[*] http://lists.gnu.org/archive/html/bug-gnu-emacs/2014-10/msg01068.html

emacs_NS_freeze.tar.bz2
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